setscrew

(setskro̵̅o̅′)

noun

  1. a machine screw passing through one part and against or into another to prevent movement, as of a ring around a shaft
  2. a screw used in regulating or adjusting the tension of a spring, etc.

See setscrew in American Heritage Dictionary 4

noun
  1. A screw, often without a head, used to hold two parts together.
  2. A screw used to regulate the tension of a spring.
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